VACUUM SWITCH Russian patent published in 2010 - IPC H01H33/66 

FIELD: electricity.

SUBSTANCE: "breaking" lever fixture is composed of supports positioned on the arm ends adjoining the central hinge. Presence of the supports at the specified location enable fixation of the "breaking" lever in the apart position without additional fixture mechanisms. The vacuum switch may contain an electromagnetic pusher. The electromagnetic pusher may operate either jointly with the common shaft drive or individually. In case of individual application of the electromagnetic pusher it may act as the common shaft drive. The vacuum switch may additionally contain a tripping mechanism impacting on the hinge area towards intersection of the axis of the central hinge of the line connecting the hinge connected to the body and the hinge connected to the common shaft. When the said force is applied to the hinge area the central hinge passes the point of maximum distance between the utmost hinges; having passed it becomes folded under the shaft impact. The tripping mechanism drive may be of electrical, mechanical or combined type.

EFFECT: design simplification resulting in fabrication cost reduction and operational reliability improvement and inertance reduction resulting in reduction of the mechanism response time; possibility of manual tripping of the vacuum switch.

5 cl, 2 dwg